Guinness is planning to giveaway branded t-shirts as part of an on-pack promotion to St Patrick's Day and its 250th anniversary.

A radio and in-store campaign to support the promotion, running on packs of cans, for three weeks either side of St Patrick’s Day (17 March). The t-shirts will celebrate the 250th anniversary of the first brewing of Guinness’s in Dublin.

Additionally a free 16oz branded glass will be given away with each 18-pack of Guinness Draught. Marketing activity around this offer will run later on in 2009.

Earlier this year the Diageo-owned brand launched an on-trade promotional campaign offering the chance to win a Guinness-branded watch.

To win the watch consumers needed to fill out quiz cards, which were given out with every purchase. Once five were collected people could send them into win a watch.